Class: Fontisan::Woff2::GlyfLocaTransform::Streams

Inherits:
Struct
  • Object
show all
Defined in:
lib/fontisan/woff2/glyf_loca_transform.rb

Overview

Mutable container for the 7 streams + 2 bitmaps. Avoids passing 9 parameters through every helper. Defined at top-level so the Struct class isn't hidden behind private (Ruby treats constants as public regardless, but RuboCop flags the modifier as useless).

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(num_glyphs) ⇒ Streams

Returns a new instance of Streams.



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# File 'lib/fontisan/woff2/glyf_loca_transform.rb', line 97

def initialize(num_glyphs)
  super(*Array.new(7) { String.new(encoding: Encoding::BINARY) },
        Array.new(((num_glyphs + 31) >> 5) << 2, 0),
        Array.new((num_glyphs + 7) >> 3, 0))
end

Instance Attribute Details

#bbox_bitmap ⇒ Object

Returns the value of attribute bbox_bitmap

Returns:

  • (Object) —

    the current value of bbox_bitmap



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# File 'lib/fontisan/woff2/glyf_loca_transform.rb', line 94

def bbox_bitmap
  @bbox_bitmap
end

#bbox_data ⇒ Object

Returns the value of attribute bbox_data

Returns:

  • (Object) —

    the current value of bbox_data



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# File 'lib/fontisan/woff2/glyf_loca_transform.rb', line 94

def bbox_data
  @bbox_data
end

#composite ⇒ Object

Returns the value of attribute composite

Returns:

  • (Object) —

    the current value of composite



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# File 'lib/fontisan/woff2/glyf_loca_transform.rb', line 94

def composite
  @composite
end

#flags ⇒ Object

Returns the value of attribute flags

Returns:

  • (Object) —

    the current value of flags



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# File 'lib/fontisan/woff2/glyf_loca_transform.rb', line 94

def flags
  @flags
end

#glyph ⇒ Object

Returns the value of attribute glyph

Returns:

  • (Object) —

    the current value of glyph



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# File 'lib/fontisan/woff2/glyf_loca_transform.rb', line 94

def glyph
  @glyph
end

#instructions ⇒ Object

Returns the value of attribute instructions

Returns:

  • (Object) —

    the current value of instructions



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# File 'lib/fontisan/woff2/glyf_loca_transform.rb', line 94

def instructions
  @instructions
end

#n_contour ⇒ Object

Returns the value of attribute n_contour

Returns:

  • (Object) —

    the current value of n_contour



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# File 'lib/fontisan/woff2/glyf_loca_transform.rb', line 94

def n_contour
  @n_contour
end

#n_points ⇒ Object

Returns the value of attribute n_points

Returns:

  • (Object) —

    the current value of n_points



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# File 'lib/fontisan/woff2/glyf_loca_transform.rb', line 94

def n_points
  @n_points
end

#overlap_bitmap ⇒ Object

Returns the value of attribute overlap_bitmap

Returns:

  • (Object) —

    the current value of overlap_bitmap



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# File 'lib/fontisan/woff2/glyf_loca_transform.rb', line 94

def overlap_bitmap
  @overlap_bitmap
end

Instance Method Details

#bbox_wire ⇒ Object

bboxStream on the wire = bboxBitmap || bboxStream (spec section 5.1).



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# File 'lib/fontisan/woff2/glyf_loca_transform.rb', line 108

def bbox_wire
  bbox_bitmap.pack("C*") + bbox_data
end

#has_overlap? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fontisan/woff2/glyf_loca_transform.rb', line 103

def has_overlap?
  overlap_bitmap.any?(&:nonzero?)
end